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WorksheetsSci. 8 Semester Review
Total questions: 105
Worksheet time: 1hrs 7mins
Name
Class
Date
1.
What does pressure measure?
a)
Strength
b)
Force exerted on a given area of surface
2.
Which is a quality that only gasses display
a)
Spread out to fill all available space
b)
Take the shape of their container
c)
Can't be compressed
d)
All of these
3.
Where would you find the largest pressure?
a)
At the bottom of the ocean
b)
At the top of Mt Everest
c)
Close to ground on the Scotch oval
d)
In a rockpool on the Great Barrier Reef
4.
How can you get these pistons to balance?
a)
Put equal masses on both sides
b)
Put heavier mass on the left piston
c)
They will never balance because one is fatter than the other
d)
Put a heavier mass on the right piston
5.
What pressure does a 4000N horse exert on the ground if each foot is 10cm2?
a)
40 N/cm2
b)
100 N/cm2
c)
400 N/cm2
d)
10 N/cm2
6.
What Principle is this?
As speed of a moving fluid increases the pressure of the fluid decreases?
As speed of a moving fluid increases the pressure of the fluid decreases?
a)
Pascals Principle
b)
Bernoulli's Principle
c)
Archimedes's Principle
d)
School Principle
7.
Unit for pressure
a)
no
b)
Surface Area
c)
Newton
d)
Pascal
8.
what is this Principle?
The buoyant fore acting on a submerged object is equal to the weight of the fluid the object displaces.
The buoyant fore acting on a submerged object is equal to the weight of the fluid the object displaces.
a)
Archimedes Principle
b)
newton
c)
All of above
9.
Buoyant forces always act:
a)
Upwards
b)
Downwards
10.
Standing on one foot causes the pressure on the floor to:
a)
Increase
b)
Decrease
c)
Remain constant
11.
It is "safe" to lay on a bed of nails due to:
a)
The increased area the nails create
b)
The increased pressure the nails create
c)
The smaller area the nails create
d)
The less force that acts on your body
12.
Archimedes' Principle relates the buoyant force to:
a)
The weight of fluid displaced
b)
The volume of the object
c)
The mass of the object
d)
The density of the object
13.
The size of a buoyant force depends on the object's:
a)
Mass
b)
Density
c)
Weight
d)
Volume
14.
The upward force exerted by a fluid on a submerged object.
a)
gravity
b)
anti-gravity
c)
buoyant force
d)
lift
15.
If the weight of an object is < the BF, the object will:
a)
Rise
b)
Sink
c)
Remain at the same level
16.
The force exerted on a surface divided by the total area over which the force is exerted. Force / surface area
a)
Net Force
b)
velocity
c)
fluid force
d)
pressure
17.
A unit of pressure equal to 1 newton per square meter.
a)
newton
b)
joule
c)
bernoulli
d)
pascal
18.
The rule that when force is applied to a confined fluid, the increase in pressure is transmitted equally throughout.
a)
pascal's principle
b)
bernoulli's principle
c)
archimedes' principle
d)
Newton's Law
19.
The rule that states that a stream of fast-moving fluid exerts less pressure than the surrounding fluid.
a)
pascal's principle
b)
bernoulli's principle
c)
archimedes' principle
d)
Newton's Law
20.
A system that multiplies force by transmitting pressure from a small surface area through a confined fluid to a larger surface area.
a)
hydraulic system
b)
archimedes system
c)
pressure system
d)
bernoulli effect
21.
An upward force.
a)
lift
b)
gravity
c)
life
d)
drag
22.
glacial erosion causes ______ as it moves across the land?
a)
plucking and striations
b)
beaches and sand bars
c)
sea caves and headlands
d)
sand dunes and losses
23.
what type of erosion causes landslides
a)
wind
b)
waves
c)
water
d)
gravity
24.
what process causes sediments to move and "takes" the sediment to a new location
a)
weathering
b)
erosion
c)
deposition
25.
True or False? Continental glaciers cover most of a continent
a)
True
b)
False
26.
True or False? Valley glaciers are long and narrow?
a)
True
b)
False
27.
a gigantic mass of moving ice
a)
glacial drift
b)
stratified drift
c)
till
d)
glacier
28.
Breakdown of rock is called?
a)
Weathering
b)
Erosion
c)
Deposition
d)
Precipitation
29.
The removal of weathered material from one location to another is a destructive process called___________?
a)
Rounding
b)
Deposition
c)
Erosion
d)
Weathering
30.
The laying down or settling of eroded material is a constructive process called_______?
a)
Erosion
b)
Deposition
31.
When wind blows over the land, it picks up the smallest particles of sediment.
a)
True
b)
False
32.
Is the growth of vegetation a form of physical or chemical weathering?
a)
Physical
b)
Chemical
33.
If a hammer were left out in the rain for several days, it would begin to rust. Is this a form of physical or chemical weathering?
a)
Physical
b)
Chemical
34.
What is the relationship between the velocity of a stream and the size of the particles it can carry?
a)
The higher the velocity, the larger the particles the stream can carry.
b)
The lower the velocity, the larger the particles the stream can carry.
35.
The diagram below shows the effect of a river on an area over many years. Which process caused the valley to form?
a)
condensation
b)
evaporation
c)
deposition
d)
erosion
36.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
37.
Which has more Inertia? (so need more force to move)
a)
Truck
b)
Ant
c)
A cat
38.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
39.
Which type of force(s) will cause a change in an object's motion?
a)
gravity
b)
zero net force
c)
balanced forces
d)
unbalanced forces
40.
What can a force do?
a)
all of the above
b)
start a motion
c)
stop a motion
41.
What is the name for a push or pull?
a)
A movement
b)
A force
c)
Speed
42.
friction is a force that acts
a)
in the same direction as the motion
b)
opposite to the direction of the motion
c)
opposite to the applied forces
43.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion.
44.
An object following a straight-line path at a constant speed
a)
has zero acceleration
b)
has no forces acting on it
c)
has a net force acting in the direction of motion
45.
You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.
a)
20N
b)
40N
c)
10N
46.
an object with a zero net force could be moving
a)
true
b)
false
47.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight
48.
What is the SI unit used to measure weight?
a)
grams
b)
Liters
c)
pounds
d)
newtons
49.
Forces that have a net force of zero and the object's movement is not effected.
a)
Balanced Forces
b)
Unbalanced Forces
50.
With unbalanced forces, the object will move in the direction that the _______ force is being applied.
a)
larger
b)
smaller
c)
equal
51.
45 m/s2 is the...
a)
Mass
b)
Force
c)
Acceleration
52.
A runner has a momentum of 670 kg m/s and is traveling at a velocity of 9 m/s. What is his mass?
a)
74.4 kg
b)
6030 kg
c)
0.0134 kg
53.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
54.
What pulls a ball back to earth?
a)
Gas
b)
Gravity
c)
Friction
55.
A measure of how fast something moves over a certain distance is ________________.
a)
motion
b)
speed
c)
work
56.
Who is the scientist who came up with the Laws of Motion?
a)
Sir Issac Newton
b)
The Greeks
c)
John Dalton
57.
What is Newton's Third Law?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
58.
An object is _____ if its position changes relative to another object.
a)
in motion
b)
at reset
c)
a frame of refence
d)
magical
59.
A place or object used for comparison to determine if another object is in motion is called a
a)
comparison point
b)
reference point
c)
point of view
d)
motion detector
60.
Jane is sitting in her car. Her mother is driving her from their house to the library. Jane waves as she passes her friend Marina. Which of the following is NOT moving with respect to Jane?
a)
Marina
b)
the car
c)
the library
d)
Jane's house
61.
A distance vs. time graph shows an object's
a)
frame of reference
b)
speed
c)
acceleration
d)
favorite food
62.
Jeff is in a stationary (still; not moving) school bus. Which is the best reference point for him to use to determine when the bus starts to move?
a)
the front entrance of the school
b)
the car next to him
c)
the bus next to him
d)
a student walking on the sidewalk
63.
A car driving at 50 miles per hour drives for 2 hours. What distance did it cover?
a)
50 miles
b)
25 miles
c)
100 miles
d)
75 miles
64.
All motion is described as relative because
a)
how do you ever really know if something is in motion
b)
motion means different things to different people
c)
everything in the universe is constantly in motion, so it depends on your frame of reference
65.
The SI unit for length or distance is
a)
foot (ft)
b)
inch (in)
c)
mile (mi)
d)
meter (m)
66.
The SI unit for time is
a)
second (s)
b)
minute (min)
c)
hour (hr)
d)
year (yr)
67.
Velocity is
a)
speed and acceleration
b)
constant speed
c)
a frame of reference
d)
speed in a given direction
68.
Speed =
a)
distance / time
b)
time / distance
c)
distance * time
69.
On a distance-versus-time graph, a straight line ALWAYS indicates that an object’s speed is _____.
a)
constant
b)
zero
c)
increasing
d)
decreasing
70.
A horizontal line on a distance vs. time graph means the object's speed is
a)
increasing
b)
decreasing
c)
zero
71.
Acceleration is
a)
increasing speed
b)
decreasing speed
c)
changing direction
d)
all of the above
72.
On a distance vs. time graph, the steep the slope _____
a)
the slower the speed
b)
the faster the speed
c)
less acceleration
d)
greater acceleration
73.
Slope is equal to
a)
rise/run
b)
run/rise
c)
rise + run
d)
rise - run
74.
If a toy car traveling at 10 cm/s passes a toy car moving at 10 cm/s in the opposite direction, both cars have the same velocity. True or False?
a)
True
b)
False
75.
A 1200 kg car and a 2400 kg car are lifted to the same height at a constant speed in a auto service station. Lifting the more massive car requires ____ work.
a)
a. less
b)
b. the same
c)
c. twice as much
d)
d. four times as much
76.
1. What is the ability to do work?
a)
Energy
b)
Kinetic energy
c)
Potential energy
d)
Energy forms
77.
What is the energy of motion that depends on speed and mass?
a)
Energy
b)
Kinetic energy
c)
Potential energy
d)
Chemical energy
78.
What is the energy of position or shape that depends on weight and height, also called stored energy?
a)
Energy
b)
Kinetic energy
c)
Potential energy
d)
Sound energy
79.
What is the law that states that energy cannot be created or destroyed only transform form one energy to another?
a)
Law of Conservation of Energy
b)
Law of Gravity
c)
Law of Inertia
d)
None of these
80.
What is a natural resource that can be used and replaced over a relatively short period of time?
a)
Energy Form
b)
Renewable resource
c)
Nonrenewable resource
d)
Natural resource
81.
What is a natural resource that cannot be replaced or that can be replaced only over thousands or millions of years?
a)
Energy form
b)
Renewable resource
c)
Nonrenewable resource
d)
Natural resource
82.
What do we call a change from one form of energy to another?
a)
Energy form
b)
Energy transformation
c)
Kinetic energy
d)
Potential energy
83.
All forms of energy can be described as which two types of energy?
a)
mechanical and kinetic
b)
sound and thermal
c)
kinetic and potential
84.
What type of energy is in this picture?
a)
Kinetic
b)
Potential
c)
Electromagnetic
85.
When plants convert the sun's energy into food, which type of energy does the sun energy become?
a)
kinetic
b)
chemical
c)
thermal
86.
What is thermal energy
a)
The sun
b)
The total amount of energy from the movement of particles in matter
c)
The ability to do work
d)
Some science thing
87.
At which point is potential energy greatest
a)
W
b)
X
c)
Y
d)
Z
88.
As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?
a)
Both the potential energy and kinetic energy decrease
b)
The potential energy decreases while the kinetic energy increases
c)
The kinetic energy decreases while the potential energy increases
d)
Bothe the potential energy and kinetic energy increase
89.
What is the unit used to measure Power?
a)
Joule
b)
Watt
c)
Newton
d)
Pascal
90.
Which has greater KE, a car traveling at 30 m/s or a second car that is 1/2 as massive, but traveling at 60 m/s?
a)
car 1
b)
car 2
c)
both have the same KE
91.
Friction causes energy to be transformed from KE to what?
a)
PGE
b)
chemical
c)
thermal
d)
elastic
92.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
93.
Which of the following cell types is formed by meiosis?
a)
muscle cells
b)
skin cells
c)
sperm cells
d)
blood cells
94.
If an intestinal cell in a butterfly contains 24 chromosomes, a butterfly egg would contain
a)
3
b)
6
c)
12
d)
24
95.
What is one advantage of sexual reproduction?
a)
offspring are identical to parents
b)
offspring are resistant to viruses
c)
offspring are born live, rather thna from eggs
d)
offspring inherit a wider variety of genetic information
96.
A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?
a)
20
b)
40
c)
80
d)
160
97.
creates genetically different offspring
a)
sexual
b)
asexual
98.
Requires two parents
a)
sexual
b)
asexual
99.
Which type of asexual reproduction is taking place?
A planarian is a non-parasitic flatworm. If a planarian was injured by a predator, it could re-grow its body parts. If the body parts were not eaten by the predator, the part could re-grow into a whole new planarian as well.
A planarian is a non-parasitic flatworm. If a planarian was injured by a predator, it could re-grow its body parts. If the body parts were not eaten by the predator, the part could re-grow into a whole new planarian as well.
a)
Budding
b)
Fission
c)
Vegetative propagation
d)
Regeneration
100.
Prokaryotes (bacteria) reproduce asexually via -
a)
spore formation
b)
bud creation
c)
vegetative propagation
d)
binary fission
101.
The offspring from asexually reproduced organisms are?
a)
Different than their parents
b)
Identical to parents
c)
Like a combination from both parents
d)
A different species
102.
Fishermen work hard to catch and remove all the starfish that get into their “underwater farms” where they raise clams & oysters. In the past, they put the starfish into their boats, cut them up with knives, and then throw the pieces of starfish overboard. They thought this would kill the starfish. What they did not know was that each piece of starfish will grow into a whole new animal. What type of asexual reproduction is taking place?
a)
Regeneration
b)
Vegetative propagation
c)
Budding
d)
Fission
103.
This is when a new organism grows by cell division on the body of its parent. The bud, or offspring is identical to the parent. The bud, when large enough, can break off of the parent and live on its own. Examples of this include yeast, hydra and potatoes.
a)
Regeneration
b)
Vegetative propagation
c)
Fission
d)
Budding
104.
What are the two forms of reproduction
a)
sexual and asexual
b)
mitosis and meiosis
c)
Tom and Jerry
d)
binary fission and fusion
105.
form of reproduction in which offspring grow from a part of a parent plant
a)
vegetative reproduction
b)
animal regeneration
c)
cloning
d)
mitotic cell division
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